General > General Technical Chat
The uBeam FAQ
Fungus:
--- Quote from: EEVblog on January 14, 2019, 10:59:04 pm ---I can't see how they could have used this open frame and clearly mains input PSU as a demo on a trade show though, even the most incompetent engineer would not put that kit together for a demo.
--- End quote ---
Good point. Why wouldn't they use a metal-caged PSU instead of one that could kill gerfingerpoken visitors.
EEVblog:
--- Quote from: EEVblog on January 14, 2019, 02:11:09 pm ---
--- Quote from: StillTrying on January 14, 2019, 02:01:52 pm ---https://webcache.googleusercontent.com/search?q=cache:4arGdU-Y_7YJ:https://oshpark.com/profiles/ubeam :horse:
--- End quote ---
LOL
Order your own board now!
https://oshpark.com/profiles/ubeam
--- End quote ---
Well that didn't take long, uBeam have removed the shared project. It was there when I posted the link. You can still use the archive link above.
EEVblog:
--- Quote from: Fungus on January 14, 2019, 11:06:15 pm ---
--- Quote from: EEVblog on January 14, 2019, 10:59:04 pm ---I can't see how they could have used this open frame and clearly mains input PSU as a demo on a trade show though, even the most incompetent engineer would not put that kit together for a demo.
--- End quote ---
Good point. Why wouldn't they use a metal-caged PSU instead of one that could kill gerfingerpoken visitors.
--- End quote ---
It looks "electronicy" for the muggle investors?
EEVblog:
These claims in Oct 2017 turned out to be laughable, and even internally inconsistent.
You can't have "meters" (plural) range at max power, and also have max power at "0.6-1W @1m"
And you can't really charge a phone in any meaningful way with 0.6W-1W. Even a lousy standard USB port is 2.5W (5V x 0.5A), so uBeam could be almost 5 times worse than an already slow standard USB port.
And this is their own MAX claims!
No wonder they put their tail between their legs and pivoted to low power IoT, Meredith Perry's dream of charging a phone with Ultrasound failed miserably as everyone predicted. Once she was booted and the adult supervision came in the claims of charging a phone quickly faded into the ether.
EEVblog:
I've been informed that they also had the big transmitter arrays boxes there (with he usual COTS transducers), so all that stuff in the photo is likely receiver stuff.
Still makes the 50-100W SMPS puzzling.
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